SB2026092535 - Infinite loop in Linux kernel ibm emac driver

Description

This security bulletin contains information about 1 vulnerability.

1) Infinite loop (CVE-ID: CVE-2026-97411)

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

CVSSv4: 5.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to cause a denial of service.

The vulnerability exists due to improper state management in the mal_remove() function of the IBM EMAC MAL driver when removing the affected module after NAPI has not been enabled or has already been disabled. A local privileged user can remove the affected module to cause a denial of service.

The condition can occur when no MACs were registered or when registered MACs were subsequently unregistered.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/7c5d41f87f079990bf241359e3c1332d8d10fe87
• https://git.kernel.org/stable/c/c4cb9a728df66c46067b26263f5beb633aae4087
• https://git.kernel.org/stable/c/f6c1aad9b35fa083f48ce0c5926204891d82e089